Sheet-metal flume.



\ o. AJPOSTER.

SHEETMETAL PLUME. *A

PPLIOAIION FILED JUNE 10, 1911 1,010,419 ptentedpmwu IlA E QQ M W rn .1

' .To all whom 'it may concern:

, UNITED STATES PATENT OFFICE.

. i cuantas A. ros'rnn, lor PORTLAND, cancion.

SHEET-METAL FLUME.

Specification of Letters Patent.

Application lcd June 10, 1911. Serial No. 632,502.

'l verged sides of the trian ular-band 4 bear Beit known that I, CHARLES A. FOSTER, i againstthe inner faces o the flanges 2, 'as a citizen of the United` States, residing at i shown in Fi 3.l The ends of the outer Portland, in the county of Multnomah and l clamping ban 3 are rovided with upstand State of Oregon, have invented a new l ingscrewfthreaded ugs 5. Angular clips Patented Dee. 5, 1911.`

and useful Improvement in Sheet-Metal Flumes, of' which the following is aspeciication.

The object of my invention is to provide a sheet.; metal iiume 'construction in whichA the sections are so joined together as to leave the inner surface of the sections smooth and uninterrupted throughout so that the water can {ion-'with a minimum coelicient of friction. At the same time the form of joint which I have provided for the sections is watertight and holds the sections in fixed relation to each other. My improved joint is equally applicable to semicylindrical and cylindrical sections.

In .the accompanying drawings Figure 1 is a' perspective view of fiume sections provided witli my new form of joint, the different parts being shown disassembled for the sake of clearness; Fig. 2 is a perspective view showing the parts of Fig. l in an assembled condition; Fig. 3 is a fragmentary detailed -view showing a cross-section through the joint ;4 Fig. 4 is an elevational View of my new form of joint applied to cylindrical sections; and Fig. 5 is a cross-section on line 13-.5 of Fig. 4 looking in the direction of the arrows. i

The Hume sections l which may either be vsemi-cylindi'ical', as shown in Figs. l and 2,

or cylindrical, as shownin Figs. 4 and 5, i

between flanges inside of the sections. In

vthe druwin' the band 4 is shown as a. solid har triangu ar'in cross section. When thisband ism pla-ce', ythe flat face thereof is substantially flush with the interior surface ofthe sections, as'sliown in Figs. 2 and 3 so as to provide a. smooth uninterrupted .surface over which the water can run with a 'very small coeii'ieient of friction. The con# i6 are provided .each with ariopening 7 bolts 5 extend. The clips 6 are provided with a clamping extension 6 adapted to engage the ends of the inner clam ing band 4. The horizontal portions 6" b the clips extend over the edges of the flume sections vided with openings 9 adapted to receive the screw threaded lugs 5. Nuts 10 are screwed on the'lugs 5 for holding the clips 6 and transverse barl 8 rigidly connected with the clamping members 3 and 4.

It will be' seen from the above that I have provided an exceedingly simple and effective means for securing a water tight joint between flume sections, without interrupting the smooth surface inside ofthe fiume. My new form of jointmay be applied equally well to Acylindrical sections, as shown in Figs. 4 and 5. The only'difference between the construction described above and that shown in these figures is that the outer and' inner clamping bands 3 and 4', i'es ectively 'are in the form of rings. This ispenses with the necessity of the clips 6 used in the construction shown in Figs. 1 and 2. The ends of the outer clamping ring 3 are provided with perforated lugs 5 through wl-ich a connecting bolt 8 g passes for -firmly drawing the ends of the clamping ring 3 together. However, both forms shown in the drawings embody the same principle.

'While I have herein shown and described two specific constructions embodying the principle of my invention, it is to he understood that changes and modifications may be made by those skilled in the art without the appended claims. For instance, it' deber 4 could be replaced b v an angular mein- ,beisimilar to the outer clamping band 3. While this would not leave a smooth sui-face it would 'present :i perfectly practical construction. Furthermore, the inner clamping band need not be strictly triangular in cross section. but it may have au oval shape,

through which the screw-threaded lugs or across the joint on Vthe inside of the thune,

when the parts are in assembled condition, as in Fig. '2.' A transverse bar 8 is prodeparting from the invention as defined in sired, the` solid triangular clamping memor in fact, any other shape which could', be used in conjunction with the outside angle iron to hold1 the flanged edges ot' the flume sections in' place. Also the transverse connecting bar 8 may assume various forms, and might in some instances even be dispensed with where the sections would be sufficiently braced upon lthe outside. i

Havin thus described my invention what I'claini'as iew and desire to secure by Letters Patent 'of the United States is:

1. In a.' construction of the class'described, the combination of two adjoiningsections provided with outwardly flaring flanges at their adjacent ends, ysaid flanges terminating in proximity to each other'wtliout overlapping, an angular clamping band arranged to tit snugly around; the outside of said flanges, an inner claiiipingband'tting into the 'recess formed by the flanges inside of' the sections, the outer face of the said inner band bein@ substantially flush with the interior surface o f the' sections, and means for clampingsaid bands togethento.

produce a tight joint.

2. In a construction of the class described, the combination of two adjoining sections provided with outwardly flaring flanges at their adjacent ends, said flanges terminating in proximity to each other withoutoverlapping, an angular clamping band arranged to fit snugly around the outside of said flanges, an inner clamping band 'fitting into the recess formed between flanges inside of the. sections, the outer face of the said inner band bein substantially flush with the interior surace of the sections, lugs secured rigidly to the ends of the outer band, and clips attached to said lugs and engaging said inner band to hold the two bands firmly against the flanges, whereby a tight joint is produced..

I'3. In a construction of the class described, the combination of two adjoining section provided with outwardly flaring'fianges a their adjacent ends, said flangesterminating in proximity to each other without overlapping. an angular clamping band arranged to fit snugly around the outlde of said flanges, an inner Aclamping band flttinginto' the recess formed betweep the; langes inside of' the sections, the outer face of the said inner band being -substantially flush with the interior surface of the sections, lugs ses cured rigidly to the ends 'of lthe outer band, clips attached to said lugs .and engaging said inner band to hold the two bands firmlv against the flanges, and a transvers Vbar connected to saidjlugs to prevent `Apre aoing of the bands.

, 4. In a construct-ion of the class described, thecombination of 4two adjoining sections provided with outwardly flaring flanges at the adjacent ends, said flanges termin-ating in proximity to each other without overlapping, an outer clamping band arranged to fi snugly around the outside -of said flanges an inner clamping b'and arranged in the re cess formed by the flanges inside of the sec tions, and means. for clamping sai d band together to produce a tight joint.

5. vIn a construction of the class described the combination of two adjoinin section provided with outwardly .flaring llanges -a theiradjacentends, said flanges terminal ing in proximity to each other without over lapping, an outer clamping band arrange to fit snugly around the outside of saiflanges, an inner clamping'band arrange in the recess formed-'by the flanges on th inside of the'sections, lugs secured rigidl` to the ends of the outer band, clips attache to said lugs for engaging the inner band t hold the two bands firmly against th flanges, and a transverse bar connected t said lugs to prevent spreading ofthe band.`

6. In a construction of the class.descr'ibe the combination of two adjoining sectior provided with 'outwardly fiaringflanges z their adjacent ends, said flanges terminatin Ain proximity to eachother without ove:

lapping, an angular clamping band arrange to fit' snugly around the outside of sai flanges, an inner clamping band fitting int the recess formed by the flanges inside( the'section, the outer face of said inner ban .being substantially flush" with the interi( of the sections, and clips forrigidly coi necting the ends of the bands together.

7. In a construction of the cl'ass describe the combination ofi. two adjoining Sectio] provided with outwardly flaring flanges their adjacent ends, said flanges terminatii in proximity to each other without ove lapping, an angular clamping band arrangi to fit snugly around the outside' of sa flanges, an inner clamping band fitting in the recess formed by the flanges inside the section, the outer face of said inner bai being substantially flush with the interior thesections, clips for rigidly connecting t ends of the band' together, and a transver bar for connecting the ends of the outer b 'to' 'prevent spreading ofthe bands.

8. In a construction of the class describe the combination of two adjoining sectio provided with outwardly flaring flanges .their adjacent ends, said flanges terminati: in proximity to each other without ovl lapping, an angular clam ing band arrang to fit snugly around t e outside of sa flanges, a 'solidtrian ular clamping ba fitting into the recess ormedby the fliu'g inside ofthe sections, the flat outer face said inner band being -substantially flu 'with the inner surface o'f the sections, a

,means for clamping said bands together provided with outwardly aring flanges at their adjacent ends, said fianges terminating in proximity to each other without overlapping, an angular clamping band arranged to fit snugly around the outside of said flanges, an inner clamping band lfitting into the recess formed by the flanges inside of thesections, the outer face of the said inner band being substantially flush with the interior surface of the sections, and a connection between the ends of the outer band for holding the two bands firmly against the flanges, whereby atight joint is produced.

10. In a construction of the class described, the combination of two adjoining sections provided with outwardly flaring fianges at their adj aeent ends, said flanges terminating in proximity to each other without overlapping, an angular clamping band arranged to fit snugly around the outside of said flanges, an inner clamping band tting into the recess formed by the langes -inside of the sections, the outer face of the said inner band being substantially iush with the in 11. In a construction of the class described,

the combination of two adjoining sections provided with outwardly flaring flanges `their adjacent ends, said flanges terminating in proximity to each other without overl lapping, an angular clamping band arranged to fit snugly around the outside of Said flanges, an inner clamping band. arranged in the recess formed at the flanges inside of the sections, lugs secured rigidly to the ends 'of the outer band, and a connection between said lugs for holding the two bands .firmly against the flanges, whereby tight joint is produced.

ln witness whereof, I hereunto subscribe my name this first day of June, la. D, will.

CHARLES lFQSTER. Witnesses:

L. D. MONROE, CHAS. F. JENSEN.. 

